Sandwich Attack
A sandwich attack wraps your trade in two attacker trades — buy just before you, sell just after — profiting from the price move your own order caused. You
A sandwich attack wraps your trade in two attacker trades — buy just before you, sell just after — profiting from the price move your own order caused. Your slippage tolerance is literally their profit margin: the higher you set it, the bigger sandwich they can build.
Why it matters
Sandwiches are the clearest proof that “decentralized” doesn’t mean “fair”: the rules are public and the exploitation is automatic. Keep slippage tight, use MEV-protected RPCs, and treat any unexpectedly bad execution price as a sandwich until proven otherwise.
Related terms
MEV · front-running ·
slippage